The "CODEX" version refers to a release by the scene group of the same name, which often includes a cracked executable, allowing users to access all in-game content without purchasing the original season pass.
Installing the unlocker is generally straightforward, but it requires precise steps to function correctly. The core principle involves moving files from the Unlocker's directory to your main WWE 2K18 installation folder. wwe 2k18 dlc unlockercodex new